Home / 28,252.76-38,987.44-15,505.64

Finding the Fourth Proportional to 28,252.76, 38,987.44 and 15,505.64

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Solution

The fourth proportional to 28,252.76, 38,987.44 and 15,505.64 is: 21,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.76 : 38,987.44 = 15,505.64 : x
  2. Step 2: Convert to fraction form
    28,252.76/38,987.44 = 15,505.64/x
  3. Step 3: Cross multiply
    28,252.76x = 38,987.44 × 15,505.64
  4. Step 4: Simplify right side
    28,252.76x = 604,525,209.16
  5. Step 5: Solve for x
    x = 604,525,209.16/28,252.76
  6. Step 6: Final answer
    x = 21,397.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.